#57 add a test for tinytext -> text expansion

mysql-test/suite/tokudb.bugs/r/expand_tinytext_text.result

+drop table if exists t;
+create table t (u tinytext, v text);
+insert into t values ('hi', 'there');
+select * from t;
+u	v
+hi	there
+alter table t change column u u text;
+select * from t;
+u	v
+hi	there
+drop table t;

mysql-test/suite/tokudb.bugs/t/expand_tinytext_text.test

+# this test verifies that column expansion of a tinytext to text column retains the correct data
+--source include/have_tokudb.inc
+--disable_warnings
+drop table if exists t;
+--enable_warnings
+
+create table t (u tinytext, v text);
+insert into t values ('hi', 'there');
+select * from t;
+alter table t change column u u text;
+select * from t;
+
+# Final cleanup.
+drop table t;